Left Hand Coil Spring

If the last coil ends in the same direction that your fingers are pointing that is the hand direction of wind of the spring.

Left hand coil spring.

Pick up your spring and look into it. Sometimes though you wouldn t want the pitch of the spring to get caught up in the pitch of the threaded mating part. In the us most screws are right hand. If the direction of the coil from top to bottom can be simulated by bending the index finger of the left hand the coil is left hand wound.

If the wire is jutting out at the 9 o clock. If you are screwing a compression spring onto a mating part you would want the coil direction to matc h that of the threads. If it s in the 3 o clock position the spring is right hand wound. If the end of the spring wire in the 9 o clock position then the spring is left hand wound.

To determine the compression spring coil direction hold the compression spring with its axis on a horizontal plane. A coil spring can be wound in either a left hand or right hand direction similar to a screw type thread. The direction of the spring wind can be easily determined by holding it in hand. In applications such as one spring operating inside an other it is necessary to coil the springs so that the helices are in opposite directions right and left.

The fingers should be placed on the outside of the body and your thumb should point upwards. Compression springs can be left or right hand coiled. Right hand wound rhw vs left hand wound lhw. If it can be.

Pick up the spring and look into it.